Electrochemical Activation of a Catalyst

The model of electrochemical promotion regards the phenomenon as catalysis in presence of an electrically controlled double layer formed by spillover-backspillover mechanism at the gas-exposed catalyst surface. This shows strong analogy with catalyst-support interactions 

In fact, the equimolar Ir02 - Ti02 catalyst mixture can only be marginally promoted electrochemically, while its open-circuit activity is about ten times higher than that of pure lr02. This is the same level of rate enhancement as is achieved with pure Ir02 catalyst when it is 

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